class VideoCall {
  constructor() {
    this.pc = { iceConnectionState: 'new' };
    this.streams = [];
  }
  
  async connect() {
    this.pc.iceConnectionState = 'checking';
    await Promise.resolve();
    this.pc.iceConnectionState = 'connected';
    this.streams.push('remote-video');
    return this.pc.iceConnectionState;
  }
  
  handleConnectionChange() {
    const states = ['new', 'checking', 'connected'];
    return states.map(state => {
      return this.pc.iceConnectionState === state ? `Status: ${state}` : null;
    }).filter(Boolean);
  }
}

const call = new VideoCall();
call.connect().then(() => {
  console.log(call.handleConnectionChange());
});